Parts of speech are the categories words belong to depending on their syntactic functions. In the English language, there are eight main parts of speech:
nouns - banquet, car, dog, man...
pronouns - I, you, he, they...
adjectives - beautiful, nice, strange...
verbs - to go, to eat, to sit...
adverbs - up, down, right, quickly...
prepositions - on, above, between, until...
conjunctions - and, but, because...
interjections - oh! ouch! dear me!...
Some people consider determiners (<em>a/an, the, my, that</em>, etc.) to be a separate part of speech, while others consider them to be a type of adjectives.